This one's trisky, it is. Like those nasty hobbitses.
My opinion, however, is while YOU don't learn the abilities, you do possess them. A master craftsman who is totemed under Shantar, for example, will, guided by the Totem, craft things on an order than a mere mortal never could.Â
When the pack link is broken, these knowledges fade because they were put into your mind by a greater being who is no longer there.
The more you open yourself to your totem, the more they can help you learn in their area of expertise; however, those dots above 5 will never truly be yours. They will remain elusive and ephemeral without the aid of those spirits.
If you follow Falcon, in my opinion, you should be able to buy your Leadership as high as you like (to 5), and while speaking with Falcon's clarity, yes, you can teach Leadership above what you, yourself, would already have. If you and your totem are in agreement, why wouldn't you be able to pass on his wisdom?